When I tried to log out by clicking the logout link at the top (first time for me because I don't really log out of S[OFU] unless I clear my browser's session data), I got the following message:
You're a registered user.
You can log in or out at any time using the OpenID you've already associated with your account.
And when I clicked on the parts of the site, it seems that I'm still logged in (see, i'm creating this question after I logged out and this question would probably appear in the list of the questions I asked) and my name is still appearing at the top of the page.
Is this by-design or is this a bug?